Ricoh D0C8, Service Manual

Page: 482 / 1647

Image Adjustment
D0CA/D0C9/D0C8/D0CB 4-248 SM
No. Check
Area
Check Item Description
scan direction and sub scan direction.
Overlay the scale on any frame line, adjust to a position
where the frame line is not hidden, and measure the most
distant position. If difficult to check, draw an auxiliary
baseline in position with no distortion to the frame line, and
measure the deviation length from the baseline with the
scale.
A: Measuring length, B: Base line, C:Copy
If meandering, measure the maximum amplitude. If difficult
to measure, draw an auxiliary baseline, measure the
deviation length from the baseline with the scale, and sum
it up.
A: Measuring length, B: Base line, C:Copy
2 Cornfield
pattern Resolution Check the number next to the finest set of lines that can be
distinguished from each other clearly, and do not blur into
each other. The intervals between lines in the chart are the
following, in 15 steps. A higher number means a finer
image (higher resolution).
2.0/2.2/2.5/2.8/3.2/3.6/4.0/4.5/5.0/5.6/6.3/7.1/8.0/9.0/10.0
[lines/mm]